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23721-79-1

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23721-79-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23721-79-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,7,2 and 1 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 23721-79:
(7*2)+(6*3)+(5*7)+(4*2)+(3*1)+(2*7)+(1*9)=101
101 % 10 = 1
So 23721-79-1 is a valid CAS Registry Number.

23721-79-1Relevant articles and documents

INFLUENCE OF ELECTRON-WITHDRAWING SUBSTITIUENTS IN THE OXAPHOSPHOLE RING ON THE AXIAL CONFORMATIONAL TRANSMISSION IN P(V) COMPOUNDS

Vries, N. K. De,Buck, H. M.

, p. 267 - 280 (2007/10/02)

A MNDO and 300-MHz 1H NMR study of some trigonal-bipyramidal (TBP) five-coordinated phosphorus (P(V)) compounds is reported.It is shown by the MNDO calculations that, in the oxaphosphole P(V) TBP compounds 5a-c, the electron distribution in the axial bond

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